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Analog Devices Inc./Maxim Integrated MAX6629MTT+T
- Part No.:
- MAX6629MTT+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog and Digital Output
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
MAX6629MTT+T.pdf
- Description:
- SENSOR DIGITAL -55C-125C 6TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:10,308
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Product details
Overview
MAX6629MTT+T from Maxim Integrated is a local digital temperature sensor with SPI-compatible 3-wire serial interface, 12-bit + sign resolution (0.0625°C/LSB), ±1.0°C max accuracy from 0°C to +70°C, and operates from -55°C to +125°C. It performs one temperature-to-digital conversion every 0.5s with typical supply current of 200μA, targeting thermal monitoring in microprocessor sockets and industrial control systems.
For engineers reviewing the MAX6629MTT+T datasheet, MAX6629MTT+T pinout, MAX6629MTT+T application, or MAX6629MTT+T equivalent, key selection criteria include conversion rate, supply current budget, SPI timing compatibility, extended temperature range support up to +150°C, and TDFN-EP package thermal performance for PCB-mounted thermal sensing.
Technical Context
The MAX6629MTT+T implements a sigma-delta ADC architecture with two's complement output format, delivering signed 12-bit temperature data plus three trailing bits (D2 = confirmation low, D1/D0 = high-impedance). Its conversion sequence is hardware-triggered by CS rising edge, requiring ≥300ms high-CS duration for completion.
It uses a read-only SPI interface with CS, SCK, and SO lines - no write capability - and supports clock frequencies up to 5MHz. The device enters idle mode when CS is pulled low, enabling data readout without interrupting thermal measurement continuity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 0.0625°C/LSB - enables precise thermal trend detection in closed-loop HVAC or CPU throttling control |
| Accuracy | ±1.0°C max (0°C to +70°C) - meets industrial-grade thermal monitoring requirements without calibration |
| Conversion Interval | 0.5s - supports real-time thermal response in fast-changing environments like motor drives or power supplies |
| Supply Current | 200μA typical - allows direct powering from logic gate outputs ≥3.0V, eliminating dedicated LDO |
| Supply Voltage | +3.0V to +5.5V - compatible with standard 3.3V and 5V system rails without level-shifting |
| Operating Range | -55°C to +125°C - qualified for automotive under-hood and industrial embedded applications |
| SPI Clock Max | 5MHz - ensures minimal bus overhead on resource-constrained microcontrollers |
Pinout & Package
The MAX6629MTT+T is housed in a 6-pin TDFN-EP (Thin Dual Flat No-lead with Exposed Pad) package, measuring 2.0mm × 2.0mm × 0.8mm. The exposed pad improves thermal conduction to the PCB and should be connected to GND for optimal thermal performance and noise immunity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (N.C.) | No Connect | Internally unused; recommended to connect to ground plane for improved thermal coupling and EMI reduction |
| 2 (GND) | Ground Reference | Primary return path for analog and digital circuitry; must be low-impedance connection to minimize measurement offset |
| 3 (VCC) | Power Supply Input | Accepts +3.0V to +5.5V; requires 0.1µF bypass capacitor to GND near pin for stable ADC operation |
| 4 (SCK) | Serial Clock Input | Edge-triggered input controlling data shift timing; supports up to 5MHz clock for efficient SPI polling |
| 5 (CS) | Chip Select Input | Rising edge initiates new conversion; falling edge halts conversion and latches result into shift register |
| 6 (SO) | Serial Data Output | Read-only, open-drain compatible output; delivers 16-bit word (D15–D0) MSB-first on SCK falling edge |
Key Features
| Feature | Design Value |
|---|---|
| 12-bit + sign digital output | Delivers signed temperature values directly usable in firmware without scaling or sign extension logic |
| Hardware-triggered conversion | Eliminates need for software polling or timer interrupts - CS rising edge starts conversion autonomously |
| Logic-gate power capability | Operates reliably when powered from CMOS/TTL outputs ≥3.0V, enabling zero-component thermal sensing nodes |
| Exposed thermal pad (TDFN) | Reduces θJA to ~110°C/W, enabling accurate die-to-PCB thermal tracking in surface-mount thermal monitoring |
| Idle mode via CS low | Allows continuous data readout without stopping conversion cycles - supports background thermal logging |
Applications
| Microprocessor Thermal Monitoring | HVAC System Control |
|---|---|
Use Scenario: Mounted beneath a socketed CPU or FPGA to monitor junction temperature in real time. IC Role / Device Role / Timing Role: Local temperature sensor providing 0.0625°C-resolution feedback to thermal management firmware. Use Value: Enables dynamic clock throttling before thermal shutdown, leveraging 0.5s conversion interval for responsive control. | Use Scenario: Embedded in ductwork or heat exchanger assemblies to regulate blower speed and valve position. IC Role / Device Role / Timing Role: Primary ambient/supply air temperature sensor interfacing with HVAC controller MCU via SPI. Use Value: ±1.0°C accuracy over 0°C–70°C ensures compliant indoor climate control without field calibration. |
| Industrial Motor Drive | Hard Disk Drive Thermal Management |
Use Scenario: Surface-mounted on IGBT driver PCB to track heatsink temperature during variable-frequency operation. IC Role / Device Role / Timing Role: Local thermal sensor feeding real-time data to motor control safety logic. Use Value: -55°C to +125°C operating range and 200μA supply current allow integration in space-constrained, high-temp drive enclosures. | Use Scenario: Integrated into HDD actuator assembly to detect head-stack assembly temperature rise during sustained seek operations. IC Role / Device Role / Timing Role: Precision local sensor reporting temperature to disk controller for adaptive spin-down decisions. Use Value: 12-bit resolution enables detection of sub-degree drifts that precede mechanical wear or lubricant degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital temperature sensor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6628MTT+T | Same pinout, identical specs, but discontinued per Maxim PLI - no new production allocation | Legacy replacement only; not suitable for new designs due to obsolescence risk | Select MAX6629MTT+T for active production and full Maxim lifetime support |
| ADT7320TRZ-REEL7 | Higher accuracy (±0.25°C), 16-bit resolution, but 3.3V-only supply and larger LFCSP package | Better precision for medical or test equipment; less suitable for mixed-voltage industrial boards | Choose ADT7320TRZ-REEL7 only if ±0.25°C accuracy and 16-bit resolution are mandatory design requirements |
Compared with MAX6628MTT+T (discontinued) and ADT7320TRZ-REEL7 (higher-precision, voltage-restricted), the MAX6629MTT+T offers optimal balance of industrial-grade accuracy, wide supply range, compact TDFN-EP footprint, and active production status for cost-sensitive embedded thermal sensing.
Availability
MAX6629MTT+T is available at Aetrix Electronics and suitable for microprocessor thermal monitoring, HVAC system control, industrial motor drive protection, and hard disk drive thermal management requiring stable component supply across multi-year production cycles.
Supply support for MAX6629MTT+T includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Maxim Integrated, now part of Analog Devices, designs precision analog and mixed-signal ICs for industrial, communications, computing, and consumer applications.
The MAX6629MTT+T belongs to Maxim's local temperature sensor product line, engineered specifically for high-resolution, low-power, SPI-based thermal monitoring in space-constrained embedded systems.
FAQ
What is the maximum operating temperature of the MAX6629MTT+T?
The MAX6629MTT+T is specified to operate from -55°C to +125°C. While it can produce valid readings up to +150°C, Maxim does not recommend extended operation above +125°C due to potential long-term reliability impact. The junction temperature limit remains +150°C per absolute maximum ratings.
Does the MAX6629MTT+T support true SPI mode 0 or mode 3?
The MAX6629MTT+T uses SPI mode 0 (CPOL = 0, CPHA = 0): SCK idles low, data sampled on the rising edge and shifted out on the falling edge. Its SO output is synchronized to SCK falling edges, and CS must remain low throughout the full 16-bit transfer - confirming strict mode 0 compliance.
Can the MAX6629MTT+T be powered directly from a microcontroller GPIO pin?
Yes - the MAX6629MTT+T can be powered from a logic gate or MCU GPIO pin outputting ≥3.0V, as its typical supply current is only 200μA. This eliminates the need for an LDO or regulator. Ensure the GPIO source impedance is low and noise-free, as VCC noise directly impacts measurement accuracy.
What is the function of Pin 1 (N.C.) on the MAX6629MTT+T TDFN package?
Pin 1 of the MAX6629MTT+T is designated N.C. (No Connect) and is internally unconnected. Maxim recommends connecting it to the PCB ground plane to improve thermal coupling and reduce electromagnetic interference - this enhances thermal measurement fidelity without affecting electrical functionality.
How does the MAX6629MTT+T handle power-on reset behavior?
The MAX6629MTT+T incorporates a power-on reset (POR) circuit that activates when VCC rises above ~1.6V. Below this threshold, the interface is inactive and the data register holds 0°C. Once VCC exceeds 3.0V, reliable temperature conversion begins - though readings are not recommended until VCC stabilizes within specification.
MAX6629MTT+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 6-WDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Sensor Type:
- Digital, Local
- Sensing Temperature - Local:
- -55°C ~ 125°C
- Sensing Temperature - Remote:
- -
- Output Type:
- SPI
- Voltage - Supply:
- 3V ~ 5.5V
- Resolution:
- 12 b
- Features:
- Shutdown Mode
- Accuracy - Highest (Lowest):
- ±0.8°C (-5°C, 6.5°C)
- Test Condition:
- 25°C (150°C)
- Operating Temperature:
- -55°C ~ 150°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 6-TDFN (3x3)
MAX6629MTT+T FAQ
1.How can I place an order for MAX6629MTT+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6629MTT+T on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MAX6629MTT+T reliable?
The price and inventory of MAX6629MTT+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6629MTT+T is usually 5 days.
3.What payment methods are accepted for MAX6629MTT+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6629MTT+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6629MTT+T?
MAX6629MTT+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6629MTT+T order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MAX6629MTT+T?
For technical support, including MAX6629MTT+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6629MTT+T requirements.
6.How does Aetrix verify that MAX6629MTT+T is sourced from the original manufacturer or authorized distributors?
All MAX6629MTT+T products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MAX6629MTT+T meets industry standards.
7.What is the process for return or replacement of MAX6629MTT+T?
All MAX6629MTT+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6629MTT+T, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MAX6629MTT+T part is unused and in its original packaging.
Return procedure for MAX6629MTT+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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